“ Von Braun had an ambivalent and complex relationship with Nazi Germany.[5] He applied for membership of the Nazi Party on 12 November 1937, and was issued membership number 5,738,692.”
From Wiki…
Von Braun was absolutely a Nazi. They used slave labor to build his rocket factories. Was he a war criminal? Probably not. But he was a Nazi and was very aware of the source of his labor.
But he built nice rockets. And the US needed nice rockets.
Wiki, really?
There were former Nazis all over the US because the USGOV had some use for them. One was a school superintendent in a district in the next state. Died in the eighties.